diff options
| author | Kajol Jain <kjain@linux.ibm.com> | 2020-05-25 12:43:04 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-28 15:24:39 +0200 |
| commit | 8ba21426738207711347335b2cf3e99c690fc777 (patch) | |
| tree | 7dbce5bf874c63bb3acd1a17024f124fdb3e73d7 /arch/powerpc/include | |
| parent | powerpc/perf/hv-24x7: Fix inconsistent output values incase multiple hv-24x7 ... (diff) | |
| download | linux-8ba21426738207711347335b2cf3e99c690fc777.tar.xz linux-8ba21426738207711347335b2cf3e99c690fc777.zip | |
powerpc/hv-24x7: Add rtas call in hv-24x7 driver to get processor details
For hv_24x7 socket/chip level events, specific chip-id to which
the data requested should be added as part of pmu events.
But number of chips/socket in the system details are not exposed.
Patch implements read_24x7_sys_info() to get system parameter values
like number of sockets, cores per chip and chips per socket. Rtas_call
with token "PROCESSOR_MODULE_INFO" is used to get these values.
Subsequent patch exports these values via sysfs.
Patch also make these parameters default to 1.
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200525104308.9814-3-kjain@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/rtas.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h index 3c1887351c71..7ef81b3e33f6 100644 --- a/arch/powerpc/include/asm/rtas.h +++ b/arch/powerpc/include/asm/rtas.h @@ -483,5 +483,11 @@ static inline void rtas_initialize(void) { }; extern int call_rtas(const char *, int, int, unsigned long *, ...); +#ifdef CONFIG_HV_PERF_CTRS +void read_24x7_sys_info(void); +#else +static inline void read_24x7_sys_info(void) { } +#endif + #endif /* __KERNEL__ */ #endif /* _POWERPC_RTAS_H */ |